karrot
4.0 kwiinkwenkwezi ezi-5 (ngokusekwe kuphononongo olu-1)
Karrot is a free and open-source tool for grassroots initiatives and groups of people that want to coordinate face-to-face activities on a local, autonomous and voluntary basis. It is designed in ways to enable community-building and support a more transparent, democratic and participatory governance of your group.
4/5 blocks due to the tracker that seems to be integrated in the website: https://www.directory.trade-free.org/wp-content/uploads/2022/10/karrot-tracker.jpg – otherwise it is free and open-source and there seems to be no business model behind it. These are strong indications for a trade-free service.